Research on the Optimization of Fire Protection Design for Large Space Subway Stations
Take the scheme of a large space subway station in a certain city as an example,we will propose relevant fire evacuation measures and verify the rationality of the measures through calculation.To meet the requirement of evacuation time,we will add enclosed staircases at both ends of the public area on the platform level,install me-chanical pressure equipment,set smoke screens on both sides of the holes,increase the mechanical smoke exhaust volume in the large space area,and install firewalls and fire doors to physically separate the fire zones,thereby solving the problem of evacuating passengers on the platform under various conditions.By using Pathfinder,a soft-ware for evacuation simulation,and FDS,a software for smoke simulation,we will simulate and analyze the evacu-ation of passengers under multiple scenarios,calculate the specific evacuation time and safety margin under differ-ent scenarios,and further verify the feasibility of the scheme.The results show that under the premise of a large opening in the middle plate,after taking a series of fire protection measures,passengers can evacuate to a safe area through enclosed staircases on both sides within the required time.The adjusted smoke exhaust system can prevent the smoke from the fire in the track area from affecting the evacuation of passengers in the public area of the station,thus achieving the set goal of fire safety design.
large space subway stationfire protection designevacuation simulationsmoke simulationenclosed staircasesmoke barrier
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